Bournemouth head coach Andoni Iraola admitted his side were fortunate to leave Elland Road with a point after a dramatic finish saw them claim a 2-2 draw.
Sean Longstaff's first Leeds goal early in the second half appeared to have earned his side victory after Joe Rodon's header before the break had cancelled out Antoine Semenyo's opener for the visitors.
But 19-year-old Kroupi, yet to start for Bournemouth and making just his fourth league appearance off the bench, volleyed home in the third minute of added time.
Iraola, whose side began the day in fourth place after wins against Wolves, Tottenham and Brighton this season, says they were lucky to get a point from the game.
He said: "I think they've had probably the clearest chances. But I was feeling, especially in the first half, tha